Coins were developed as a medium of exchange because other items like cows, grain, and land were more difficult to move from place to place. true or false?

For which pair of objects would adding the same a

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”